Sandro Cortese has won the Moto3 race at Estoril, beating Maverick Vinales in a thrilling last-lap decider to take victory at the line. Cortese and Vinales fought a race-long duel, the two staying close until the last lap, when the contest exploded. The pair passed each other several times on the last lap, including some physical and controversial passes by both sides. They then ran into backmarkers in the final corner, but with Cortese leading, the backmarkers made little difference to the outcome. Cortese just made it to the line ahead of Vinales, with Luis Salom crossing the line 11 seconds later to take 3rd.

The victory at Estoril gives Cortese the lead in the championship, 2 points ahead of Vinales. Salom moves up into 3rd, while Romano Fenati, who crashed out on lap 15, drops to 4th.